On almost invariant subsets of the real line
On almost-free modules over complete discrete valuation rings
On an algebraic and Kripke semantics for intermediate logics
On an equivalence of fuzzy subgroups. III.
On an extremal characterization of partitions
On an extremely restricted ω-rule
On annihilators in BL-algebras
In the paper, we introduce the notion of annihilators in BL-algebras and investigate some related properties of them. We get that the ideal lattice (I(L), ⊆) is pseudo-complemented, and for any ideal I, its pseudo-complement is the annihilator I⊥ of I. Also, we define the An (L) to be the set of all annihilators of L, then we have that (An(L); ⋂,∧An(L),⊥,0, L) is a Boolean algebra. In addition, we introduce the annihilators of a nonempty subset X of L with respect to an ideal I and study some properties...
On annihilators of BCK-algebras
On approximation of amenable groups by finite quasigroups.
On archimedean -algebras
On asymptotic behaviour of universal fuzzy measures
The asymptotic behaviour of universal fuzzy measures is investigated in the present paper. For each universal fuzzy measure a class of fuzzy measures preserving some natural properties is defined by means of convergence with respect to ultrafilters.
On automorphism groups of boolean algebras
On automorphisms of Boolean algebras embedded in P (ω)/fin
We prove that, under CH, for each Boolean algebra A of cardinality at most the continuum there is an embedding of A into P(ω)/fin such that each automorphism of A can be extended to an automorphism of P(ω)/fin. We also describe a model of ZFC + MA(σ-linked) in which the continuum is arbitrarily large and the above assertion holds true.
On automorphisms of computability potential scales for -element algebras.
On automorphisms of the Banach space
We investigate Banach space automorphisms focusing on the possibility of representing their fragments of the form for A,B ⊆ ℕ infinite by means of linear operators from into , infinite A×B-matrices, continuous maps from B* = βB∖B into A*, or bijections from B to A. This leads to the analysis of general bounded linear operators on . We present many examples, introduce and investigate several classes of operators, for some of them we obtain satisfactory representations and for others give...
On axial maps of direct product,s I
On axial maps of direct products, II
On axial maps of the direct product of finite sets
On axiom systems of pseudo-BCK algebras.
On axiomatizability and preservation in Kripke models.